I Can't Download My Matches

So just to look at my mistakes in a ranked game, I decided to watch a replay to improve, since lately I've just wanted to get better at League. I mean who wouldn't? However, pretty ironic how it happens when I want to use this feature. It doesn't work. The first time, it tells me error, so I was patient, and waited till the next day. That "next day" is today. So, i clicked on it, it just doesn't work, the client doesn't show any message indicating error, just the feature for me at least doesn't work (to my liking). Now, question, does anybody have any ideas that could assist me?